diff --git a/references.txt b/references.txt
index 64d57335f2f..1f950192391 100644
--- a/references.txt
+++ b/references.txt
@@ -96,3 +96,4 @@
  * "Topology Correction of Subcortical Segmentation",
  * F. Segonne, E. Grimson and B. Fischl
  * (2003) MICCAI 2003.
+